Alternatively and in case of difficulties, download and run the cygwin
setup yourself as follows: cygwinsetup.exe --no-admin --quiet-mode
--verbose --upgrade-also --root c:/cygwin --site
http://www.mirrorservice.org/sites/sourceware.org/pub/cygwin/ --packages
perl,php-jsonc,php-simplexml
installCygwinWindowsDoInstall(force = FALSE, proxy = "")
Set to TRUE
to force updating and overwriting an existing
installation in c:\cygwin
Specify any proxy to be used for downloading via http, e.g.
"host_or_ip:port". installCygwinWindowsDoInstall
may detect and use
the proxy configuration uset in MS Windows to use an automatic proxy
configuration script. Authenticated proxies are not supported at this time.